9871222 has 16 divisors (see below), whose sum is σ = 15920640. Its totient is φ = 4575528.

The previous prime is 9871219. The next prime is 9871229. The reversal of 9871222 is 2221789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9871229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 978 + ... + 4549.

It is an arithmetic number, because the mean of its divisors is an integer number (995040).

Almost surely, 2^9871222 is an apocalyptic number.

9871222 is a deficient number, since it is larger than the sum of its proper divisors (6049418).

9871222 is a wasteful number, since it uses less digits than its factorization.

9871222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5595.

The product of its digits is 4032, while the sum is 31.

The square root of 9871222 is about 3141.8500919044. The cubic root of 9871222 is about 214.5146578696.

It can be divided in two parts, 987 and 1222, that added together give a square (2209 = 47²).

The spelling of 9871222 in words is "nine million, eight hundred seventy-one thousand, two hundred twenty-two".